diff options
| author | Fabien Chouteau <fabien.chouteau@barco.com> | 2010-04-23 14:21:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-20 13:21:39 -0700 |
| commit | f48cf80f93ba974eb3201ab2d0f2c4cef950f3fc (patch) | |
| tree | a90ec04a891d1698110372791d01a03d90c6da3f /drivers/usb/gadget/composite.c | |
| parent | 326b4810cc995209e31136af4202ed0414814ed5 (diff) | |
USB: Composite framework: Add suspended sysfs entry
This patch adds a sysfs entry (/sys/devices/platform/_UDC_/gadget/suspended) to
show the suspend state of an USB composite gadget.
Signed-off-by: Fabien Chouteau <fabien.chouteau@barco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/composite.c')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 5465d8767f9..f9aff1bbcb3 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -898,6 +898,18 @@ static void composite_disconnect(struct usb_gadget *gadget) /*-------------------------------------------------------------------------*/ +static ssize_t composite_show_suspended(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct usb_gadget *gadget = dev_to_usb_gadget(dev); + struct usb_composite_dev *cdev = get_gadget_data(gadget); + + return sprintf(buf, "%d\n", cdev->suspended); +} + +static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); + static void /* __init_or_exit */ composite_unbind(struct usb_gadget *gadget) { @@ -944,6 +956,7 @@ composite_unbind(struct usb_gadget *gadget) } kfree(cdev); set_gadget_data(gadget, NULL); + device_remove_file(&gadget->dev, &dev_attr_suspended); composite = NULL; } @@ -1036,6 +1049,10 @@ static int __init composite_bind(struct usb_gadget *gadget) string_override(composite->strings, cdev->desc.iSerialNumber, iSerialNumber); + status = device_create_file(&gadget->dev, &dev_attr_suspended); + if (status) + goto fail; + INFO(cdev, "%s ready\n", composite->name); return 0; @@ -1064,6 +1081,8 @@ composite_suspend(struct usb_gadget *gadget) } if (composite->suspend) composite->suspend(cdev); + + cdev->suspended = 1; } static void @@ -1084,6 +1103,8 @@ composite_resume(struct usb_gadget *gadget) f->resume(f); } } + + cdev->suspended = 0; } /*-------------------------------------------------------------------------*/ |